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Journal Articles

Targeted Model Error Determination for Limit Load Formulas for Axial Surface Defect in a Pressurized Pipe

Igor Orynyak, Vladyslav Marchenko, Roman Mazuryk, Andrii Oryniak

J. Pressure Vessel Technol. February 2023, 145(1): 011503.

Paper No: PVT-22-1053

DOI: https://doi.org/10.1115/1.4055008

Published Online: August 18, 2022

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Topics: Errors, Pipes, Weight (Mass)

Journal Articles

Analytical Limit Load Procedure for the Axial Complex Shaped Defect in a Pressurized Pipe

Igor Orynyak, Julia Bai, Roman Mazuryk

J. Pressure Vessel Technol. August 2022, 144(4): 041305.

Paper No: PVT-21-1119

DOI: https://doi.org/10.1115/1.4052851

Published Online: December 6, 2021

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Topics: Algorithms, Pipes, Pressure, Stress

Proceedings Papers

Analytical Limit Load Formula and Procedure for Strength Calculation of Axial Complex Shaped Defect in Pipe

Igor Orynyak, Julia Bai, Roman Mazuryk

Proc. ASME. PVP2021, Volume 4: Materials and Fabrication, V004T06A059, July 13–15, 2021

Paper No: PVP2021-61640

DOI: https://doi.org/10.1115/PVP2021-61640

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Topics: Algorithms, Optimization, Pipes, Pressure, Stress

Journal Articles

Application of Short and Long (Enhanced Vlasov's) Solutions for Cylindrical Shell on Example of Concentrated Radial Force

Andrii Oryniak, Igor Orynyak

J. Pressure Vessel Technol. February 2021, 143(1): 014501.

Paper No: PVT-19-1069

DOI: https://doi.org/10.1115/1.4047828

Published Online: August 17, 2020

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Topics: Displacement, Finite element methods, Pipes, Differential equations, Shells

Proceedings Papers

FEM Calculations of SIF and COA for Through Axial Cracks in Pipes in Geometrically Nonlinear Formulation

Andrii Oryniak, Igor Orynyak

Proc. ASME. PVP2018, Volume 3B: Design and Analysis, V03BT03A030, July 15–20, 2018

Paper No: PVP2018-85033

DOI: https://doi.org/10.1115/PVP2018-85033

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Topics: Finite element methods, Finite element model, Fracture (Materials), Pipes, Stress, Pressure, Computer simulation, Finite element analysis, Hoop stress, Leak-before-break

Proceedings Papers

Approximate Formulas for Cylindrical Shell Free Vibration Based on Vlasov’s and Enhanced Vlasov’s Semi-Momentless Theory

Igor Orynyak, Yaroslav Dubyk

Proc. ASME. PVP2018, Volume 8: Seismic Engineering, V008T08A050, July 15–20, 2018

Paper No: PVP2018-84932

DOI: https://doi.org/10.1115/PVP2018-84932

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Topics: Boundary-value problems, Circular cylindrical shells, Deflection, Equations of motion, Finite element methods, Finite element model, Fourier series, Free vibrations, Mode shapes, Pipes

Proceedings Papers

Williams-Wittrick Approach Application for an Effective Search for Natural Vibration Frequencies of Pipeline Systems With Fluid-Structure Interaction

Igor Orynyak, Anatolii Batura, Yaroslav Dubyk

Proc. ASME. PVP2018, Volume 4: Fluid-Structure Interaction, V004T04A026, July 15–20, 2018

Paper No: PVP2018-84933

DOI: https://doi.org/10.1115/PVP2018-84933

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Topics: Fluid structure interaction, Oscillating frequencies, Pipeline systems, Fluids, Junctions, Boundary-value problems, Free vibrations, Pipelines, Pipes, Vibration

Proceedings Papers

Dynamic Assessment of the Core Barrel During Loss of Coolant Accident

Yaroslav Dubyk, Vladislav Filonov, Oleksii Ishchenko, Igor Orynyak, Yuliia Filonova

Proc. ASME. PVP2018, Volume 4: Fluid-Structure Interaction, V004T04A035, July 15–20, 2018

Paper No: PVP2018-84762

DOI: https://doi.org/10.1115/PVP2018-84762

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Topics: Accidents, Coolants, Pressurized water reactors, Shells, Stress, Transients (Dynamics), Acoustics, Finite element analysis, Fracture mechanics, In-service inspection

Proceedings Papers

Efficient Solution for Cylindrical Shell Based on Short and Long (Enhanced Vlasov’s) Solutions on Example of Concentrated Radial Force

Igor Orynyak, Andrii Oryniak

Proc. ASME. PVP2018, Volume 3A: Design and Analysis, V03AT03A033, July 15–20, 2018

Paper No: PVP2018-85032

DOI: https://doi.org/10.1115/PVP2018-85032

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Topics: Pipes, Displacement, Shear (Mechanics), Boundary-value problems, Computer software, Computers, Differential equations, Equilibrium (Physics), Finite element analysis, Fourier series

Proceedings Papers

Swelling of VVER-1000 Core Baffle: Numerical Modeling and Direct Measurement of its Geometrical Dimensions

Andrii Oryniak, Igor Orynyak

Proc. ASME. PVP2017, Volume 7: Operations, Applications and Components, V007T07A019, July 16–20, 2017

Paper No: PVP2017-65769

DOI: https://doi.org/10.1115/PVP2017-65769

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Topics: Computer simulation, Dimensions, Gages, Geometry, Nuclear power stations, Stress, Accounting, Boundary-value problems, Brittleness, Coolants

Journal Articles

A New Methodology for Structural Reliability Assessment of the Heat Exchanger Tubes of WWER Steam Generators

Igor Orynyak, Maksym Zarazovskii, Mykhaylo Borodii

J. Pressure Vessel Technol. June 2017, 139(3): 031208.

Paper No: PVT-16-1071

DOI: https://doi.org/10.1115/1.4035414

Published Online: February 3, 2017

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Topics: Circuits, Fracture (Materials), Heat exchangers, Leakage, Nuclear power stations, Pressure, Probability, Boilers, Shapes, Statistics

Journal Articles

The Accounting for Geometrical Nonlinearity for Thin-Walled Pressurized Elastic Pipe With Long Axial Surface Crack

Andrii Oryniak, Igor Orynyak

J. Pressure Vessel Technol. April 2017, 139(2): 021210.

Paper No: PVT-16-1012

DOI: https://doi.org/10.1115/1.4033703

Published Online: January 11, 2017

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Topics: Finite element methods, Fracture (Materials), Pipes, Pressure, Stress, Surface cracks, Accounting, Bending (Stress)

Proceedings Papers

Analysis of Water Hammer due to Sudden Rupture of Reactor Coolant System

Iaroslav Dubyk, Igor Orynyak

Proc. ASME. PVP2016, Volume 4: Fluid-Structure Interaction, V004T04A021, July 17–21, 2016

Paper No: PVP2016-63589

DOI: https://doi.org/10.1115/PVP2016-63589

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Topics: Nuclear reactor coolants, Rupture, Water hammer, Stress, Accidents, Cooling, Design, Impulse (Physics), Shells, Structural stability

Proceedings Papers

The Application of Long and Short Cylindrical Shell Solutions for Stress and Flexibility Determination in a Single Mitred Bend

Igor Orynyak, Andrii Bogdan, Iryna Selivestrova

Proc. ASME. PVP2016, Volume 1A: Codes and Standards, V01AT01A001, July 17–21, 2016

Paper No: PVP2016-63598

DOI: https://doi.org/10.1115/PVP2016-63598

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Topics: Pipes, Stress, Pipe bends, Piping systems, Shells, Differential equations, Finite element methods, Finite element model, Membranes, Pressure

Proceedings Papers

Water Hammer Event on Aboveground Section of Oil Piping During Hydro Test

Igor Orynyak, Anatolii Batura, Iaroslav Dubyk

Proc. ASME. PVP2016, Volume 5: High-Pressure Technology; Rudy Scavuzzo Student Paper Symposium and 24th Annual Student Paper Competition; ASME Nondestructive Evaluation, Diagnosis and Prognosis Division (NDPD); Electric Power Research Institute (EPRI) Creep Fatigue Workshop, V005T05A024, July 17–21, 2016

Paper No: PVP2016-63826

DOI: https://doi.org/10.1115/PVP2016-63826

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Topics: Pipes, Water hammer, Pipelines, Damage, Displacement, Dynamic testing (Materials), Geometry, Hydrostatic testing, Impulse (Physics), Springs

Proceedings Papers

The Method for Structural Reliability Estimation of the Heat Exchanger Tubes of Steam Generator of WWER NPPs

Igor Orynyak, Maksym Zarazovskii, Mykhaylo Borodii

Proc. ASME. PVP2016, Volume 3: Design and Analysis, V003T03A045, July 17–21, 2016

Paper No: PVP2016-63710

DOI: https://doi.org/10.1115/PVP2016-63710

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Topics: Boilers, Heat exchangers, Nuclear power stations, Reliability, Probability, Leakage, Pressure, Failure, Fracture (Materials), Fracture (Process)

Proceedings Papers

Oore-Burns Function of Form Application in Numerical Treatment of Mode I Flat Crack Problem in Infinite Body

Igor Orynyak, Anatolii Batura, Andrii Oryniak, Igor Lokhman

Proc. ASME. PVP2016, Volume 6A: Materials and Fabrication, V06AT06A003, July 17–21, 2016

Paper No: PVP2016-63304

DOI: https://doi.org/10.1115/PVP2016-63304

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Topics: Fracture (Materials), Shapes, Polynomials, Numerical analysis, Approximation, Finite element methods, Finite element model, Modeling, Simulation, Theoretical methods

Proceedings Papers

Assessment of Stress-Displacement State of Cable Suspended Pipeline Bridge During Inspection Pig Motion

Igor Orynyak, Igor Burak, Sergiy Okhrimchuk, Andrii Novikov, Andrii Pashchenko

Proc. ASME. IPC2016, Volume 2: Pipeline Safety Management Systems; Project Management, Design, Construction and Environmental Issues; Strain Based Design; Risk and Reliability; Northern Offshore and Production Pipelines, V002T02A010, September 26–30, 2016

Paper No: IPC2016-64197

DOI: https://doi.org/10.1115/IPC2016-64197

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Topics: Bridges (Structures), Cables, Displacement, Inspection, Pipelines, Stress, Pipes, Tension, Vibration, Weight (Mass)

Proceedings Papers

The Investigation of Significance of the Geometrical Nonlinearity for 1-D Crack Stress Intensity Factor Calculation in Slightly Distorted Thin-Walled Pressurized Pipe

Igor Orynyak, Andrii Oryniak

Proc. ASME. PVP2015, Volume 1B: Codes and Standards, V01BT01A005, July 19–23, 2015

Paper No: PVP2015-45276

DOI: https://doi.org/10.1115/PVP2015-45276

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Topics: Fracture (Materials), Pipes, Stress, Pressure, Bending (Stress), Accounting, ASME Standards, Deformation, Dimensions, Finite element methods

Proceedings Papers

Methodological Features of WWER RPV Metal Critical Temperature of Brittleness Prediction on the Base of the Data Scatter and the Chemical Composition

Igor Orynyak, Maksym Zarazovskii, Sergii Radchenko

Proc. ASME. PVP2015, Volume 3: Design and Analysis, V003T03A068, July 19–23, 2015

Paper No: PVP2015-45679

DOI: https://doi.org/10.1115/PVP2015-45679

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Topics: Brittleness, Electromagnetic scattering, Metals, Temperature, Radiation (Physics), Welded joints, Surveillance, Brittle fracture, Databases, Embrittlement

Journal citation

NARROW

Targeted Model Error Determination for Limit Load Formulas for Axial Surface Defect in a Pressurized Pipe

Analytical Limit Load Procedure for the Axial Complex Shaped Defect in a Pressurized Pipe

Analytical Limit Load Formula and Procedure for Strength Calculation of Axial Complex Shaped Defect in Pipe

Application of Short and Long (Enhanced Vlasov's) Solutions for Cylindrical Shell on Example of Concentrated Radial Force

FEM Calculations of SIF and COA for Through Axial Cracks in Pipes in Geometrically Nonlinear Formulation

Approximate Formulas for Cylindrical Shell Free Vibration Based on Vlasov’s and Enhanced Vlasov’s Semi-Momentless Theory

Williams-Wittrick Approach Application for an Effective Search for Natural Vibration Frequencies of Pipeline Systems With Fluid-Structure Interaction

Dynamic Assessment of the Core Barrel During Loss of Coolant Accident

Efficient Solution for Cylindrical Shell Based on Short and Long (Enhanced Vlasov’s) Solutions on Example of Concentrated Radial Force

Swelling of VVER-1000 Core Baffle: Numerical Modeling and Direct Measurement of its Geometrical Dimensions

A New Methodology for Structural Reliability Assessment of the Heat Exchanger Tubes of WWER Steam Generators

The Accounting for Geometrical Nonlinearity for Thin-Walled Pressurized Elastic Pipe With Long Axial Surface Crack

Analysis of Water Hammer due to Sudden Rupture of Reactor Coolant System

The Application of Long and Short Cylindrical Shell Solutions for Stress and Flexibility Determination in a Single Mitred Bend

Water Hammer Event on Aboveground Section of Oil Piping During Hydro Test

The Method for Structural Reliability Estimation of the Heat Exchanger Tubes of Steam Generator of WWER NPPs

Oore-Burns Function of Form Application in Numerical Treatment of Mode I Flat Crack Problem in Infinite Body

Assessment of Stress-Displacement State of Cable Suspended Pipeline Bridge During Inspection Pig Motion

The Investigation of Significance of the Geometrical Nonlinearity for 1-D Crack Stress Intensity Factor Calculation in Slightly Distorted Thin-Walled Pressurized Pipe

Methodological Features of WWER RPV Metal Critical Temperature of Brittleness Prediction on the Base of the Data Scatter and the Chemical Composition

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